[Ham-Mac] CI-V interface noise

[Don Agro]

Hi Chris,

On 15-Apr-07, at 9:44 PM, EZ Rhino wrote:

> Chris and Don, thanks for the quick replies.  First, I didn't mean  
> to imply that there is something wrong with either of your products;

Understood.

> the fact that the noise recurs with two different interfaces is  
> probably a good sign that there is nothing wrong with the interface  
> itself.
>
> IT hadn't occurred to me that it could be radiated through the  
> antenna.  For fun, I disconnected the coax from the radio and tried  
> to duplicate the noise in the normal manner.  No noise.

Great !

>   I reconnected the coax and wound it into a choke balun outside,  
> just before it comes into the house (my wire antenna is fed with  
> ladder line to ground level.)  It seems to help some (in  
> conjunction with the two toroids on the USB cable.)
>
> Without changing out the power supply, I can't say whether or not  
> that would help.  I guess I can check on cost and see if it is  
> worth trying.

No, I thought if you had someone around your area with a Mac laptop  
or something you could do a quick check, but I think you've found the  
source, or at least the way it's getting into the shack.

Does it sound like power line noise ?

> Thanks!
>
> Chris

73 Don Agro VE3VRW

D o g   P a r k   S o f t w a r e   L t d .

email: dagro at dogparksoftware.com
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